A packing box with expansion function
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN FAITH PACKING PROD CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-26
AI Technical Summary
Existing packaging boxes have fixed space, making it difficult to meet the packaging needs of items with varying quantities and sizes. Traditional expansion operations are complex and unstable, leading to material waste and item damage.
Design a packaging box with a splicing expansion mechanism and a positioning anti-slip mechanism. Automatic locking and quick disassembly are achieved through the cooperation of elastic pads, conical columns, locking blocks and connecting rods. Combined with the synergistic work of support plates, positioning slots and springs, it ensures stable stacking and flexible capacity adjustment.
It enables flexible adjustment of packaging box capacity, reduces material waste and transportation costs, improves stacking stability and safety, and ensures the integrity of goods.
Smart Images
Figure CN224410097U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging box technology, specifically a packaging box with expansion function. Background Technology
[0002] Packaging boxes are containers used to hold, protect, and transport goods. They are typically made of materials such as paper, wood, plastic, and metal, and their shapes, sizes, and structures vary greatly depending on the specific needs. Common examples include corrugated cardboard boxes used in the express delivery industry, wooden crates commonly used in logistics warehousing, and plastic packaging boxes frequently used for packaging electronic products.
[0003] The main functions of packaging boxes are as follows: In terms of protection, they prevent items from being affected by collisions, compression, moisture, dust, etc., during transportation and storage, ensuring the integrity and quality of the goods. In terms of transportation, packaging boxes can consolidate scattered items, facilitating handling, loading, unloading, and stacking, thus improving logistics efficiency. In terms of commerce, product information, brand logos, and other content can be printed on packaging boxes, serving as a means of promotion and product identification. Furthermore, well-designed packaging boxes can make it easier for users to access and store items, enhancing the user experience.
[0004] Currently, most common packaging boxes on the market have fixed space, making it difficult to meet the packaging needs of items with varying quantities and sizes. Traditional rigid packaging boxes, such as wooden or hard plastic boxes, have fixed structures. When the items to be packaged exceed their initial capacity, larger boxes must be used, which not only wastes packaging materials but also significantly increases packaging costs. Some foldable or easily expandable boxes can adjust the space to some extent, but the expansion operation is complex and the connection structure is unstable, making them prone to loosening and damage during transportation, resulting in damage to the items. Therefore, a packaging box with an expandable function is proposed to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This utility model provides a packaging box with an expansion function, which aims to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] As a preferred technical solution of this application, a packaging box with expansion function includes a box body, grooves are provided on both the left and right sides of the box body, a fixing plate is fixedly connected to the inner wall of the groove, a splicing expansion mechanism is provided inside the fixing plate, and a positioning anti-slip mechanism is provided on the top of the box body.
[0010] The splicing and expansion mechanism includes two elastic pads. The right sides of the two elastic pads are fixedly connected to the left side of the left fixed plate. A connecting rod is fixedly connected to the left side of the elastic pads. The right fixed plate has two chambers inside. A spring is fixedly connected to the inner wall of the adjacent side of the two chambers. A conical column is fixedly connected to the opposite side of the two springs. A locking block is fixedly connected to the opposite side of the two conical columns. A handle is rotatably connected to the outside of the fixed plate. A disassembly assembly is provided at the bottom of the right fixed plate.
[0011] As a preferred technical solution of this application, the left sides of the two elastic pads are in contact with the right side of the right fixing plate, and the outer walls of the two connecting rods are slidably connected to the inner wall of the right fixing plate.
[0012] As a preferred technical solution of this application, the outer wall of the conical column is slidably connected to the inner wall of the chamber, and a slot is provided on the outside of the connecting rod, and the outer wall of the locking block engages with the inner wall of the slot.
[0013] As a preferred technical solution of this application, the disassembly assembly includes a U-shaped frame, the outer wall of which is slidably connected to the inner wall of the right-side fixing plate, and pressure blocks are fixedly connected to both the front and rear sides of the top of the U-shaped frame, with the outer wall of the pressure block contacting the outer wall of the conical column.
[0014] As a preferred technical solution of this application, a second spring is fixedly connected to the top of the U-shaped frame, and the top of the second spring is fixedly connected to the bottom of the fixing plate on the right side.
[0015] As a preferred technical solution of this application, the positioning anti-slip mechanism includes a cover plate, the rear end of which is rotatably connected to the rear top of the box body. Positioning grooves are provided on both the left and right sides of the top of the cover plate, and support plates are fixedly connected to both the left and right sides of the bottom of the box body. The outer wall of the support plate matches the inner wall of the positioning groove.
[0016] As a preferred technical solution of this application, the bottom inner wall of the positioning groove is provided with a square groove, and two springs are fixedly connected to the bottom inner wall of the square groove. The top ends of the two springs are fixedly connected to a limiting plate, and the outer wall of the limiting plate is slidably connected to the inner wall of the square groove. The rear side of the limiting plate is in contact with the front side of the support plate.
[0017] (III) Beneficial Effects
[0018] 1. In this utility model, the splicing and expansion mechanism uses the cooperation of spring 1, cone-shaped column, locking block and connecting rod slot to achieve automatic locking and quick disassembly of two boxes. When expansion is required, simply place the box to be spliced between the grooves on both sides of the base box, push the connecting rod, and the locking block will accurately engage with the slot under the action of spring 1, completing the splicing. When disassembling, press the U-shaped frame, and the pressure block pushes the cone-shaped column to disengage the locking block from the slot. The operation is simple and quick, allowing the packaging box to be flexibly adjusted according to actual needs, avoiding frequent replacement of packaging boxes due to changes in the volume of goods, reducing packaging material waste, and significantly reducing packaging costs. It is especially suitable for cost-sensitive industries such as logistics and warehousing.
[0019] 2. In this utility model, the positioning and anti-slip mechanism utilizes the coordinated work of a support plate, a positioning groove, a spring, and a limiting plate to achieve stable stacking of packaging boxes. During stacking, the support plate at the bottom of the upper packaging box inserts into the positioning groove at the top of the cover plate of the lower packaging box. The support plate pushes the limiting plate to compress the spring. After the support plate is fully inserted, the spring pushes the limiting plate to tightly abut against the support plate, firmly locking the upper and lower packaging boxes. This not only makes the stacking process smoother and reduces the labor intensity of manual alignment, but also effectively prevents the upper packaging box from slipping, avoiding damage to goods caused by unstable stacking of packaging boxes. This greatly improves the safety during warehousing and transportation and ensures the integrity of the goods. Attached Figure Description
[0020] Figure 1 A three-dimensional view of a packaging box with an expandable capacity;
[0021] Figure 2 This is a schematic diagram of the structure of a packaging box with expansion function;
[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0023] Figure 4 for Figure 2 Enlarged view of point B in the middle;
[0024] Figure 5 This is a schematic diagram of a fixing plate in a packaging box with expansion function;
[0025] Figure 6 for Figure 5 Enlarged view of point C in the middle.
[0026] In the picture:
[0027] 1. Box body; 2. Groove; 3. Fixing plate; 4. Elastic pad; 5. Connecting rod; 6. Slot; 7. Chamber; 8. Spring 1; 9. Conical column; 10. Locking block; 11. Handle; 12. U-shaped frame; 13. Pressure block; 14. Spring 2; 15. Cover plate; 16. Positioning groove; 17. Support plate; 18. Square groove; 19. Spring 3; 20. Limiting plate. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] This utility model provides a packaging box with an expansion function, see reference. Figure 1 , Figure 2 and Figure 4 The package includes a box body 1, which serves as the basic main structure of the entire packaging box and is used to hold items, providing basic storage space for the items. The left and right sides of the box body 1 are provided with grooves 2, and the inner walls of the grooves 2 are fixedly connected to fixed plates 3. The interior of the fixed plates 3 is equipped with a splicing and expansion mechanism. The main function of the grooves 2 is to provide space for splicing and expansion operations. The fixed plates 3 are an important installation base for the splicing and expansion mechanism, providing installation positions for splicing components. The top of the box body 1 is equipped with a positioning and anti-slip mechanism. The grooves 2, the positioning and anti-slip mechanism, and the splicing and expansion mechanism are all laid out with the box body 1 as the carrier.
[0030] The splicing and expansion mechanism includes two elastic pads 4. The right side of the two elastic pads 4 is fixedly connected to the left side of the left fixed plate 3. The left side of the two elastic pads 4 is in contact with the right side of the right fixed plate 3. The elastic pads 4 play a key role in buffering and shock absorption during the splicing process. When the two boxes 1 are spliced, the elastic pads 4 can alleviate the impact force caused by the splicing operation between the boxes 1 and avoid damage to the surface of the boxes 1. The left side of the elastic pads 4 is fixedly connected to connecting rods 5. The outer walls of the two connecting rods 5 are slidably connected to the inner wall of the right fixed plate 3. One end of the connecting rod 5 is connected to the elastic pad 4, and the other end can pass through the box 1 to be spliced and cooperate with the right fixed plate 3. The right-side fixing plate 3 has two chambers 7. Springs 8 are fixedly connected to the inner walls of the adjacent sides of the two chambers 7, and conical columns 9 are fixedly connected to the distant sides of the two springs 8. The outer walls of the conical columns 9 are slidably connected to the inner walls of the chambers 7. Locking blocks 10 are fixedly connected to the distant sides of the two conical columns 9. The chambers 7 provide the installation space for springs 8, conical columns 9, and locking blocks 10, offering movement guidance and protection for these components. They restrict the movement trajectory of the conical columns 9 and locking blocks 10, allowing them to slide precisely along the inner walls of the chambers 7. This ensures that locking blocks 10 can accurately engage or disengage from the slots 6, enabling splicing and disassembly. Springs 8 connect the inner walls of the chambers 7 and the conical columns 9, providing power to the locking blocks 10. During splicing, springs 8 are in their natural state, pushing the conical columns 9 to move the locking blocks 10, causing them to engage in the slots 6, thus automatically locking the two housings 1. The connecting rod 5 has a slot 6 on its outside. The outer wall of the locking block 10 engages with the inner wall of the slot 6. The slot 6 is located on the outside of the connecting rod 5 and is adapted to the locking block 10 in the right fixing plate 3. When the connecting rod 5 passes through the box 1 to be assembled, the locking block 10 is engaged in the slot 6 under the action of the spring 8, thereby firmly locking the two boxes 1. The fixing plate 3 is rotatably connected to the outside of the fixing plate 3. The handle 11 is rotatably connected to the outside of the fixing plate 3. Its main function is to facilitate the user to move the packaging box. During the handling process, the user can easily lift or move the packaging box by grasping the handle 11 and applying force. The bottom of the right fixing plate 3 is provided with a disassembly component.
[0031] The disassembly assembly includes a U-shaped frame 12. The outer wall of the U-shaped frame 12 is slidably connected to the inner wall of the right-side fixed plate 3. Pressure blocks 13 are fixedly connected to the front and rear sides of the top of the U-shaped frame 12. The outer wall of the pressure block 13 is in contact with the outer wall of the conical column 9. When disassembling the splicing box 1, pressing the U-shaped frame 12 can drive the pressure block 13 on it to move, pushing the conical column 9 to compress the spring 8, causing the locking block 10 to disengage from the slot 6, thereby releasing the connection between the two boxes 1 and achieving quick disassembly. The top of the U-shaped frame 12 is fixedly connected to the spring 14. The top of the spring 14 is fixedly connected to the bottom of the right-side fixed plate 3. The spring 14 is connected between the top of the U-shaped frame 12 and the bottom of the right-side fixed plate 3. After the disassembly operation, it provides the reset power for the U-shaped frame 12. When the disassembly operation is completed and the U-shaped frame 12 is released, the spring 14 restores its deformation, pushes the U-shaped frame 12 to move upward and reset, so that the disassembly assembly returns to its initial state, which is convenient for the next splicing and disassembly operation.
[0032] Reference Figure 3 , Figure 5 and Figure 6 The positioning and anti-slip mechanism includes a cover plate 15. The rear end of the cover plate 15 is rotatably connected to the rear top of the box 1. The cover plate 15 is used to close the box 1 and protect the items inside. After the items are placed, closing the cover plate 15 can prevent items from falling, dust from entering, and external collisions from damaging the items. Positioning grooves 16 are provided on the left and right sides of the top of the cover plate 15. Support plates 17 are fixedly connected to the left and right sides of the bottom of the box 1. The outer wall of the support plate 17 matches the inner wall of the positioning groove 16. The positioning groove 16 matches the support plate 17 at the bottom of the upper packaging box. When stacking packaging boxes, the support plate 17 of the upper packaging box can be inserted into the positioning groove 16 to play a positioning and guiding role, making the stacking process of packaging boxes more accurate and convenient, and reducing the difficulty of manual alignment.
[0033] The bottom inner wall of the positioning groove 16 is provided with a square groove 18. Two springs 19 are fixedly connected to the bottom inner wall of the square groove 18. The top of the two springs 19 is fixedly connected to a limiting plate 20. The outer wall of the limiting plate 20 is slidably connected to the inner wall of the square groove 18. The square groove 18 is the installation space for the springs 19 and the limiting plate 20. It provides guidance for the sliding of the limiting plate 20, ensuring that the limiting plate 20 can move up and down in the square groove 18. At the same time, it provides an installation position for the springs 19, ensuring that the springs 19 can function properly. The rear side of the limiting plate 20 contacts the front side of the support plate 17. When the support plate 17 is inserted into the positioning groove 16, the limiting plate 20 abuts against the front side of the support plate 17 under the action of the springs 19, restricting the movement of the support plate 17 and preventing the upper packaging box from sliding down in the stacked state, thus improving the safety of the stacked packaging boxes.
[0034] Working principle: When the splicing and expansion mechanism is working, the box 1 to be spliced is placed between the grooves 2 on both sides of the base box 1. The connecting rod 5 on the left fixing plate 3 is pushed so that it passes through the connecting hole of the right fixing plate 3 of the box 1 to be spliced. At this time, the spring 8 in the inner chamber 7 of the right fixing plate 3 is in a natural state, which will push the cone column 9 to drive the locking block 10 to move, so that the locking block 10 is accurately locked into the slot 6 of the connecting rod 5, thereby realizing a stable connection between the two boxes 1. The elastic pad 4 plays a buffering role during the connection process, reducing the collision and wear between the boxes 1. When disassembly is required, the U-shaped frame 12 at the bottom of the right fixing plate 3 is pressed up. The pressure block 13 on the U-shaped frame 12 pushes the cone column 9 to compress the spring 8, so that the locking block 10 is disengaged from the slot 6, the connection is released, and the box 1 to be spliced can be easily removed.
[0035] When the positioning and anti-slip mechanism is in operation, during the stacking of packaging boxes, the support plate 17 at the bottom of the upper packaging box is aligned with the positioning groove 16 at the top of the cover plate 15 of the lower packaging box and slides in smoothly. As the support plate 17 is inserted into the positioning groove 16, the support plate 17 pushes the limiting plate 20 to compress the spring 3 19 and move it downward. When the support plate 17 is fully inserted into the positioning groove 16, the spring 3 19 returns to its original shape and pushes the limiting plate 20 upward, tightly abutting against the front side of the support plate 17, restricting the movement of the support plate 17, and firmly locking the upper and lower packaging boxes. This makes the stacking process of packaging boxes smoother, eliminating the need for manual alignment and fixing, reducing labor intensity. At the same time, the locking function of the limiting plate 20 effectively prevents the upper packaging box from slipping during stacking, ensuring stacking stability and improving safety during storage and transportation.
[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A packaging box with expandable capacity, comprising a box body (1), characterized in that: The box (1) has grooves (2) on both the left and right sides. A fixing plate (3) is fixedly connected to the inner wall of the groove (2). A splicing expansion mechanism is provided inside the fixing plate (3). A positioning anti-slip mechanism is provided on the top of the box (1). The splicing and expansion mechanism includes two elastic pads (4). The right side of the two elastic pads (4) is fixedly connected to the left side of the left fixed plate (3). A connecting rod (5) is fixedly connected to the left side of the elastic pads (4). Two chambers (7) are opened inside the right fixed plate (3). Springs (8) are fixedly connected to the inner walls of the two chambers (7) on the adjacent side. Conical columns (9) are fixedly connected to the opposite side of the two springs (8). Locking blocks (10) are fixedly connected to the opposite side of the two conical columns (9). A handle (11) is rotatably connected to the outside of the fixed plate (3). A disassembly assembly is provided at the bottom of the right fixed plate (3).
2. A packaging box with expansion function according to claim 1, characterized in that: The left sides of the two elastic pads (4) are in contact with the right side of the right fixing plate (3), and the outer walls of the two connecting rods (5) are slidably connected to the inner wall of the right fixing plate (3).
3. A packaging box with expansion function according to claim 1, characterized in that: The outer wall of the cone-shaped column (9) is slidably connected to the inner wall of the chamber (7), and a slot (6) is provided on the outside of the connecting rod (5). The outer wall of the locking block (10) engages with the inner wall of the slot (6).
4. A packaging box with expansion function according to claim 1, characterized in that: The disassembly assembly includes a U-shaped frame (12), the outer wall of which is slidably connected to the inner wall of the right-side fixing plate (3), and pressure blocks (13) are fixedly connected to the front and rear sides of the top of the U-shaped frame (12), with the outer wall of the pressure block (13) in contact with the outer wall of the cone-shaped column (9).
5. A packaging box with expansion function according to claim 4, characterized in that: The top of the U-shaped frame (12) is fixedly connected to a second spring (14), and the top of the second spring (14) is fixedly connected to the bottom of the fixing plate (3) on the right side.
6. A packaging box with expansion function according to claim 1, characterized in that: The positioning anti-slip mechanism includes a cover plate (15), the rear end of which is rotatably connected to the top rear side of the box body (1). Positioning grooves (16) are provided on the left and right sides of the top of the cover plate (15), and support plates (17) are fixedly connected to the left and right sides of the bottom of the box body (1). The outer wall of the support plate (17) matches the inner wall of the positioning groove (16).
7. A packaging box with expansion function according to claim 6, characterized in that: The bottom inner wall of the positioning groove (16) is provided with a square groove (18). Two springs (19) are fixedly connected to the bottom inner wall of the square groove (18). The top of the two springs (19) is fixedly connected to a limiting plate (20). The outer wall of the limiting plate (20) is slidably connected to the inner wall of the square groove (18). The rear side of the limiting plate (20) is in contact with the front side of the support plate (17).